Where to buy a 3ct natural round diamond

Half of these diamonds are listed between $20,953 and $45,114 (as of November 6, 2026).

Certificated stones with a recently confirmed price only, 6,238 of them. Each contributes its cheapest confirmed price.

As of November 6, 2026, the same certified diamond typically costs 44% more at a typical retailer than at the cheapest for lab-grown stones, and 20% more for natural ones (the median across stones listed by two or more retailers). Comparing shows you the cheapest of the retailers listing the same stone.

Ranked by active inventory count. Selection is mechanical, not editorial.

1. 1NZ Jewellers4,490 in stock

   New Zealand·Founded 2006·EGL, GIA, HRD, IGI·30-day returns·Ships to United States

   Terms read on the retailer’s own site, October 19, 2026

   Visit NZ Jewellers
2. 2Carbon Sparkle4,020 in stock

   United States·EGL, GIA, HRD, IGI·21-day returns·Ships to United States

   Terms read on the retailer’s own site, September 2, 2026

   Visit Carbon Sparkle
3. 3Yorxs3,039 in stock

   Germany·Founded 2011·GIA, HRD, IGI

   Terms not yet verified

   Visit Yorxs
4. 4Aurelinne2,954 in stock

   United States·Founded 2021·EGL, GIA, HRD, IGI·Ships to United States

   Terms not yet verified

   Visit Aurelinne
5. 5MOH London2,875 in stock

   United Kingdom·EGL, GIA, HRD, IGI

   Terms not yet verified

   Visit MOH London
6. 6

   The Perfect Carat

   2,701 in stock

   US·EGL, GIA, HRD, IGI·Ships to United States

   Terms not yet verified
7. 777 Diamonds2,678 in stock

   United Kingdom·Founded 2005·GIA, HRD, IGI·Ships to United States

   Terms not yet verified

   Visit 77 Diamonds
8. 8Rare Carat2,489 in stock

   United States·Founded 2016·GIA, HRD, IGI·30-day returns·Ships to United States

   Terms read on the retailer’s own site, October 19, 2026

   Visit Rare Carat
9. 9Allurez2,291 in stock

   United States·Founded 2010·GIA, HRD, IGI·Ships to United States

   Terms not yet verified

   Visit Allurez
10. 10B2C Jewels1,788 in stock

    United States·Founded 2004·AGS, GIA, HRD, IGI·30-day returns·Ships to United States

    Terms read on the retailer’s own site, October 19, 2026

    Visit B2C Jewels

Stock counts reflect current listings. Founded and shipping details come from public sources. Return terms are our summary of each retailer's own policy page, dated per retailer above. Retailers change their terms, so check the retailer's own returns and shipping pages before you buy.

61 of the 71 retailers with shipping details ship to United States. 10 do not. 2 retailers have not published any shipping details.

Each combination below has its own page with the retailers that stock exactly that grade.

Current examples carried by more than one retailer, so the comparison is real. Prices shown in USD.

• 3.01ct J SI2from $9,930 across 12 retailersAs of November 6, 2026
• 3.01ct J SI2from $9,111 across 12 retailersAs of November 6, 2026
• 3.02ct J SI1from $17,650 across 10 retailersAs of November 6, 2026
• 3.02ct J SI1from $12,780 across 5 retailersAs of November 1, 2026
• 3.01ct I SI2from $12,351 across 12 retailersAs of November 6, 2026
• 3.01ct I SI2from $13,114 across 12 retailersAs of November 6, 2026

• Round: the most common cut, with the highest light return per carat.
• Natural: mined diamonds with the certification, provenance and resale profile traditional buyers expect.